I am having the same issue. vCenter 6.1b on windows 2012 r2, VSC 6.2 on 2012 R2. All the backup jobs are failing as they can't find the storage systems, and I can't connect to the hostname:port# error.
This is happening on three identical systems.
I can connect to the storage systems from the VSC boxes via telnet to 443, so its not a connectivity issue.
I changed the java setting for VSC down to 512, but no change. I really don't want to roll back to 6.1